[SOLVED] [FIXED CODE BELOW]
It is a small app with a webview, i want to reload this when connection to internet is back. I open the app (with internet connected) and it shows the web (google.com.ar), when I disconnect WiFi and 3G if I navigate on the web it show error message, it is ok, but if I reconnect WiFi the app crashes. What is the problem? I think is in the BroadReceiver, in the manifest i have android.net.wifi.STATE_CHANGE and android.net.conn.CONNECTIVITY_CHANGE.
Thanks.
MainActivity.java
package com.example.app;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.os.StrictMode;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class MainActivity extends ActionBarActivity {
static WebView myWebView;
#Override
protected void onCreate(Bundle savedInstanceState) {
StrictMode.enableDefaults();
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myWebView = (WebView) findViewById(R.id.webView);
myWebView.loadUrl("http://google.com.ar");
myWebView.setWebViewClient(new WebViewClient() );
}
}
ConnectionBroadReceiver.java
package com.example.app;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
public class ConnectionBroadReceiver extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
ConnectivityManager cm = (ConnectivityManager)
context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
if (netInfo != null && netInfo.isConnectedOrConnecting()) {
MainActivity.myWebView.reload();
} else {
}
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.app"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="19"
android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme"
android:screenOrientation="landscape" android:configChanges="orientation|keyboardHidden">
<activity
android:name="com.example.app.MainActivity"
android:label="#string/app_name"
android:screenOrientation="landscape" android:configChanges="orientation|keyboardHidden">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver
android:name="com.example.app.ConnectionBroadReceiver">
<intent-filter>
<action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
</intent-filter>
</receiver>
</application>
</manifest>
Related
I am trying to change the main activity in android to another activity and playing a video in the new activity. but, even I changed in the manifest the main activity, it didn't show me the video when I'm starting the app. I tried to Check in the Logcat if the activity is still launched, and i didn't see any message.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.mta2223">
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/Theme.MTA2223">
<activity
android:name=".Entering"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".ActivityShowingPlayers"
android:exported="false" />
<activity
android:name=".MainActivity"
android:exported="true">
</activity>
</application>
</manifest>
The new activity
package com.example.mta2223;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Log;
import android.widget.MediaController;
import android.widget.VideoView;
public class Entering extends AppCompatActivity {
VideoView videoView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_entering);
videoView= (VideoView) findViewById(R.id.videoV);
videoView.setVideoPath("res/raw/intrologo.3gp");
videoView.start();
while (videoView.isPlaying()){
Log.d("HEy","hey");
}
videoView.stopPlayback();
Intent i = new Intent(this,MainActivity.class);
startActivity(i);
finish();
}
}
Try this
In this code get video path from raw folder
String path = "android.resource://com.example.mta2223" + "/" + R.raw.intrologo;
videoView.setVideoPath(path);
videoView.start();
I am designing an android application in java and I would like it to launch when the smartphone starts up I of course registered a BroadcastReceiver for the BOOT event of my phone as explained here but it does not work on Android 10 if not for info it worked on Android 4.1.
Can you help me please ?
Here is my code:
Manifest :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.openclassrooms.fr.premierprojet">
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity android:name=".PremiereActivite">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".StartAppOnBoot">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.QUICKBOOT_POWERON" />
</intent-filter>
</receiver>
</application>
</manifest>
Classe Main :
package com.openclassrooms.fr.premierprojet;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
public class PremiereActivite extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
Classe Diffuseur :
package com.openclassrooms.fr.premierprojet;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
public class StartAppOnBoot extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
if (Intent.ACTION_BOOT_COMPLETED.equals(intent.getAction())) {
Intent i = new Intent(context, PremiereActivite.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(i);
}
}
}
Cordially.
What is the proper way to handle Bluetooth media buttons in an Android app? At this point, all I want is an event to fire when I press the pause/play button on my Bluetooth headset. Somehow, I had a working solution yesterday, and today it just doesn't work. Without reinstalling the app, or any update happening on my phone, the onReceive method of my subclass of BroadcastReceiver is never entered. I'm targeting Android 9.0, since this is just for myself.
I used the information in these two questions for the solution:
How to capture key events from bluetooth headset with android
BroadcastReceiver for ACTION_MEDIA_BUTTON not working
This is a bare minimum version of what was working yesterday, which currently does not work:
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.example.myapplication">
<uses-permission android:name="android.permission.BLUETOOTH" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme"
tools:ignore="GoogleAppIndexingWarning">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name=".MediaButtonIntentReceiver">
<intent-filter android:priority="2139999999">
<action android:name="android.intent.action.MEDIA_BUTTON" />
</intent-filter>
</receiver>
</application>
</manifest>
MainActivity.java
package com.example.myapplication;
import androidx.appcompat.app.AppCompatActivity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.media.AudioManager;
import android.os.Bundle;
public class MainActivity extends AppCompatActivity {
MediaButtonIntentReceiver mMediaButtonReceiver = new MediaButtonIntentReceiver();
IntentFilter mediaFilter = new IntentFilter(Intent.ACTION_MEDIA_BUTTON);
AudioManager mAudioManager = null;
ComponentName mReceiverComponent = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
mReceiverComponent = new ComponentName(this, MediaButtonIntentReceiver.class);
mediaFilter.setPriority(2139999999);
registerReceiver(mMediaButtonReceiver, mediaFilter);
}
}
MediaButtonIntentReceiver.java
package com.example.myapplication;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
public class MediaButtonIntentReceiver extends BroadcastReceiver {
public MediaButtonIntentReceiver() {
super();
Log.i("mylog", "init");
}
#Override
public void onReceive(Context context, Intent intent) {
Log.i("mylog", "receive");
abortBroadcast();
}
}
I want to block incoming SMS message as long as my application is running . I could achieve that but the problem is after I close the app or even restart or even uninstall it the user will not be able to receive SMS message anymore . So How can I make the application to block incoming SMS only when it's running and when it gets closed or uninstalled etc.. to stop blocking SMS. Here's my code :
BroadCastReceiver.Java
package com.example.sms;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.telephony.SmsMessage;
import android.widget.Toast;
public class BroadCastReceiver extends BroadcastReceiver
{
public void onReceive(Context context, Intent intent)
{
abortBroadcast();
}
}
MainActivity.java
package com.example.sms;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
Manifiest :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.sms"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.RECEIVE_SMS"/>
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<receiver android:name=".BroadCastReceiver">
<intent-filter android:priority="2147483647">
<action android:name="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
</receiver>
<activity
android:name="com.example.sms.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Note: I've tested the application on android 2.2 on my android emulator "Sent SMS messages using Telnet"
Check if your app is running then only abort broadcast receiver else not
//define this variable above onReceive() with default value as false;
boolean appRunningInBack=false;
ActivityManager am = (ActivityManager) mContext.getSystemService(Activity.ACTIVITY_SERVICE);
String packageName = am.getRunningTasks(1).get(0).topActivity.getPackageName();
if(packageName.equalIgnoreCase("your app package name") || appRunningInBack)
{
appRunningInBack=true;
abortBroadCast();
} else {
}
Also add Permission in AndroidManifest.xml
<uses-permission android:name="android.permission.GET_TASKS" />
After this when your app goes in background.or while running .this variable will be true.
I wrote simple android app with bugs. When open second activity from menu- android stopped apps.
Code:
Manifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="10" />
<application android:icon="#drawable/icon" android:label="#string/app_name">
<activity android:name=".Activit"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<activity android:name=".Activit2"/>
</manifest>
First Activity:
package com.example;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.widget.AdapterView.AdapterContextMenuInfo;
public class Activit extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.me, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item){
switch(item.getItemId()){
case R.id.ok: Activ();
};
return super.onOptionsItemSelected(item);
}
private void Activ(){
Intent inten=new Intent();
inten.setClass(Activit.this, Activit2.class);
startActivity(inten);
}
}
Second Activity with temporary layout(it the same in the first):
package com.example;
import android.app.Activity;
import android.os.Bundle;
public class Activit2 extends Activity{
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
}
your tag <Activity /> should be in ( not out ) of the tag <application> :
try this :
<application android:icon="#drawable/icon" android:label="#string/app_name">
<activity android:name=".Activit"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Activit2"/> // you should declare your activity Here
</application>
The tag <activity android:name=".Activit2"/> should be inside the <application> tag in your Manifest.xml
Your second activity definition is outside the application definition in your AndroidManifest.xml.